Right now I have a parent/teacher account because I was using Study.com to study for DSST's that it turns out I no longer need.

I can access all the college credit courses, they just don't count for credit. I was thinking about taking a few to maximize how many I can complete in a couple months time. After I get a few learned, I thought I would upgrade my membership so that I could maybe finish everything I need Study.com for in just a couple months.

Will I still be able to take those classes for college credit if I've already taken them with a parent/teacher account? Anyone do this before?

I have never used a Parent/Teacher account before, mine has always been the student account. Does your account allow you to do all the quizzes or is it an administrative account that sets up quiz/course material for students?

If it does allow you to do the quizzes, I don't see why it wouldn't allow you to "upgrade" to the College Accelerator option and get two exams/month for the membership.

If it's anything like the ALEKS system, the parent account doesn't actually "do the assignments/quizzes or assessments", the student account does the quizzes and the parent account just keeps track of the progress and requests assessments, etc...

You need to contact Study.com and tell them that your account should be a student account; if it is indeed a parent/teacher level account. They offer the $59 plan (that includes quizzes not exams); which sounds like what you've been describing. A parent/teacher account sounds like it would have a 'student' under it, maybe you're both - as a parent/teacher would have no reason to actually take the courses. When you go from the student $59 to the college $199 plan all completed coursework moves forward with it.

Giving the Walden University, MBA - Project Management program a test drive through a "First Term Free" offer.

Thomas Edison State University (TESU) - BSBA General Management, December 2018- ASNSM in Computer Science, December 2018